hello i drive a 2000 zx3 2.0 dohc zetec 5sp. ive had it for 2 years with very little problems now all of a sudden under heavy acceleration it sort of chugs every time i go to get on it and it usually happens in between the rpms of 2500 to 5000k if it does it then once i get into the higher rpms it goes away it also does it at idle if i give the car more than 1/2 throttle

i have already replaced the plugs and wires and the coil pack i am going to clean the throttle body and mass air flow senser any ideas on what could cause this problem

Sounds like a fuel pressure issue to me. Your symptoms are very similar to the fuel pump going out. Very common on that model year. They redesigned the fuel pump and fuel pump canister after the 01' model year. You can try replacing the fuel filter sometimes that helps. Others may have more suggestions just need to wait for them to chime in

well i already replaced the fuel filter but i shouldnt have out happened suddenly its been running like that for about 2 months and i just now got a chance to post on here

and to add it had done it for a little bit so i replaced the coil and then it stopped for a little bit then i just came back and has done it for about 3 weeks now after the little spurt where it had gone away after replacing coil

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